Synthesis, optical properties and photophysics of group 10-12 transition metal complexes and polymer derived from a central tris(p-ethynylphenyl)amine unit

Wai Yeung WONG*, Yanhe Guo, Cheuk Lam HO

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

A new series of luminescent group 10-12 metal alkynyl complexes and polyyne polymer containing a central tris(p-ethynylphenyl)amine bridging chromophore were prepared. The regiochemical structures of these triangular-shaped trinuclear compounds and polymer were studied by various spectroscopic and photophysical analyses. Upon photoexcitation, each of them emits an intense purple-blue fluorescence emission in the near UV region in dilute fluid solutions at room temperature. Harvesting of organic triplet emissions observed in the low-energy region harnessed through the strong heavy-atom effects of group 10-12 transition metals was examined and the results were compared among these three neighboring late transition metal elements. The influence of group 15 nitrogen-based heteroatom on the intersystem crossing rate and the spatial extent of the lowest singlet and triplet excitons was fully elucidated and a comparison was made to the nearest group 14 and 16 neighbors in the same row of the Periodic Table.

Original languageEnglish
Pages (from-to)46-54
Number of pages9
JournalJournal of Inorganic and Organometallic Polymers and Materials
Volume19
Issue number1
DOIs
Publication statusPublished - Mar 2009

Scopus Subject Areas

  • Polymers and Plastics
  • Materials Chemistry

User-Defined Keywords

  • Alkyne
  • Metallopolyyne
  • Transition metal
  • Triphenylamine
  • Triplet emission

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